/Engine/Source/Runtime/GeometryCore/Public/VectorUtil.h
un-normalized direction that is parallel to normal of triangle V0,V1,V2
namespace UE { namespace Geometry { namespace VectorUtil { template<typename RealType> [TVector](API\Runtime\Core\Math\TVector)< RealType > UE::Geometry::VectorUtil::NormalDirection ( const [TVector](API\Runtime\Core\Math\TVector)< RealType > & V0, const [TVector](API\Runtime\Core\Math\TVector)< RealType > & V1, const [TVector](API\Runtime\Core\Math\TVector)< RealType > & V2 ) } } }